Compressor.



J. B. & A. LUKOMSKI.

COMPRESSOR.

APPLICATION FILED MAY10|1915. 1,176,843. Patented Mar. 28, 1916.

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Patented Mar. 28, 1916.

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I l JVM E so THE COLUMBIA PLANOGRAPH co., WASHINGTON, D. C.

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JOHN B. IiUKOMSKI AND ANTHONY LUKOMSKI, OIF-DETROIT, MICHIGAN.

COMPRESSOR.

Specification of Letters Patent.

Patented Mar. 28, 1916.

Application filed May 10, 1915. Serial No. 27,090.

To all whom t may concern.'

Be it knownthat we, JOHN B. LUKOMSKI and ANTHONY LUKoMsKr, citizens ofthe United States of America, residing at Detroit, in the county ofWayne and State of Michigan, have invented certain new and usefulImprovements in Compressors, f which the following is a specification,referenc being had therein to the accompanying drawings.

This invention relates to compressors designed for refrigerating systemsand ice making machines, andthe primaryrob] ect of our invention is toprovide a compressor of the above type which has an exceedingly longstroke and is operated at such a speed that ammonia gas can beexpeditiously and economically compressed and delivered to a condenser.

A further object of our invention is to provide a compressor wherein theparts are.

of manufacture and. at the same time retain the features by whichsafety, durability, simplicity and ease of assembling are secured, andour invention resides inthe novel construction, combination andarrangement of lparts vto be hereinafter specifically described and thenclaimed.

Reference will now behad tothe drawings, wherein- Figure 1 is a sideelevation of the compressor; Fig. 2 is an end view of the same; Fig. 3is an enlarged ,vertical` sectional view of a portionA of thecompressor; Fig. 4 is a cross sectional view of a valve housingadaptedto form part of the compressor.

In the drawings, the reference numeral w1 Y denotes a base or a suitablefoundationand secured thereto is a crank casing-2 supporting a guidehousing 3. :Journaled 1n the crank casing 2 is a crank shaft 4 havingone end tliereof'provided with a flywheel and Vthe opposite end thereofwith a largeg'ear wheel 6, the end of the shaft supporting the largegear wheel 6 being j ournaled in an additional bearing 7 on the base 1.The large gear wheel 6 meshes with a small gear wheel or pinion 8 on thearmature shaft 9 of an electric motor 10. llhe electric motor is of aconventional form adapted to be operated from a suitable source ofelectrical energy.

The shaft 4, within the crank casing 2, has a crank portion 11 providedwith a connecting rod 12 which extends into the guide housing 3 and isconnected to a cross head ings.

13 slidable in said housing. Diametrically opposed sides of the housing3 have detachable plates 14 and man-holes whereby easy access can be hadto the interior of the housing 3 for assembling parts of the cross head13.

Mounted on the top of the guide housing 3 is a large stuffing box 15containing packing 16 which insures a non-leakable connection betweenthe stuling box and a piston rod 17 connected to the cross head 13 andextending through the stuffing box. Suitably secured to the top of thestuffing box 15 is the lower end of a-compressor cylinder 18 in whichreciprocates the piston head 19 of the rod 17. The cylinder 18 has awater jacket 20 provided with end connections 21 whereby water or asuitable cooling agent can be circulated thro-ugh the jacket to maintainthe walls or bore of the cylinder 18 cool during the operation of thecompressor.

Y At diametrically opposed sides of the cylinder 18 are longitudinalenlargements 22 providing an intake passage 23 and an outlet passage 24,the intake passage 23 having a suitable connection 25 with the coils ofa refrigerating or ice making machine (not shown). The outlet passage 24has a suitable connection 26 to a condenser (not shown). TheY lower endsof the passages 23 and 24 are in communication with lateral ports 27communicating with the cylinder 18. In these lateral ports areplacedvalve housings which vare substantially alike, with the exception,that one housing is provided with an intake valve opening toward thecylinder 18 and the other. housing with an outlet valve opening awayfrom said cylinder. Each housing comprises a spider or web 28 having avalve seat head 29 at one end thereof and arclosure head at the oppositeend. thereof. The valve seat heads 29 afford seats for valves 31 and 32having stems 33 extending through guides 34, carried by the spiders orwebs 28 of the hous- The outer end of the stem 33 of the valve 31 has acup 35 and encircling said stem, between the cup and the closure head 30of this particular valve housing, is a coiled retractile' spring 36which holds the intake valve 31 normally seated; the outer end of thevalve stem 33, the cup 35 and the spring 36 being closed by a cap 37suitably secured to the lower end of the enlargement.

The outer end of the stem of the valve 32 has cups 38 and interposedbetween said oups is a coiled compression spring 39 adapted to hold theOutlet valve 32 normally seated; the cups 38 and the spring 39 beinginclosed by aA cap 40 suitably secured to the other enlargement of thecompressor cylinder. All of this construction is best shown in Fig. 3,wherein it will be observed that an upstroke of the piston head 19 willunseat the intake valve 31 and allow the lower end of the cylinder to becharged with ammonia gas, while the downstroke of the piston produces acompression in the lower end of the cylinder which unseats the outletvalve 32 and allows the compressed ammonia gas to enter the passage 24and the condenser connection 26 thereof. Of course the valves are springseated, but are susceptible to an increase or decrease of pressure inthe lower end of the cylinder 18, whereby the intake and outlet valvewill be alternately actuated during a reciprocatory movement of the piston within the cylinder.

The upper ends of the passages23 and 24 are in communication withseparate vertical valve housings 41 and 42 respectively, said valvehousings having spring seated valves 43 and 44, the latter opening awayfrom the upper end of the cylinder and the former opening into thecylinder, which necessitates cutting away the upper end of the cylinder,as at 45, in order to provide clearance for the intake valve. Instead ofa separate cap for each housing, said valve housings have a single cap46 suitably secured tothe upper ends of the enlargement 22, also theupper end of the cylinder 18, as best shown in Figs. l and 2. The valvehousings 41 and 42 are very similar to the valve housings at the lowerend of the compressor cylinder and the valves 32 and 43 are adapted tobe actuated in-synchronism while the valves 31 and 44 simultaneouslyoperate, thus permitting of the piston head 19 taking in ammonia gas onone side thereof and compressing and discharging upon the opposite sidethereof.

From the foregoing it will be observed that with the compressor inoperation, the

long stroke of the piston and the rapidity at which the same isreciprocated will cause a large volume of ammonia gas to be drawn intothe compressor cylinder, compressed and discharged to the condenser,consequently-a compressor constructed in accordance with our inventionis capable of handling the ammonia gas of a refrigerating system or icemaking machine which u nder diametrically opposed sides of said cylinderproviding intake and outlet passages having the upper ends thereofVterminating at the upper end of said cylinder and the lower ends inlateral ports communicating with the lower end of said cylinder, a valvehousing in each port, valves in said housings adapted to be alternatelyactuated by a Y movement of said piston in said cylinder, caps at theouter ends of said lateral ports, means inclosed by said capsmaintaining said valves normally closed, a set of valve housingsestablishing communication. be-

tween the upper ends of said passages and the upper end of saidcylinder, Vvalves in said housings adapted to be alternately operated bya movement of said piston within said cylinder, said cylinder being cutaway to provide .clearance for an opening movement of one of saidvalves, caps on the last mentioned valve housings, and means inclosed bysaid caps to maintain said valves normally closed. Y

In testimony whereof tures in presence of twoY witnesses. JOHN B.LUKOMSKI.

ANTHONY LUKOMSKI.

Vitnesses KARL H. BUTLER, ANNA M. DORR. Y

Copies of this patent may 4be obtained for five cents each, byYaddressing the. Commissioner f Patents,

Washington, D. G. Y

we aix our signa-Y

